Device for straightening extruded shapes



Aug. .17, 1926. 1,596,850

* J. MAUM DEVICE FOR STRAIGHTENING EiXTRUDED SHAPES Filed June 8, 1925 3Sheets-Sheet 1 vwonto'a I Au 17, 1926, 1 59mm J. MAU M DEVICE FORSTRAIGHTENING EXTRUDED SHAPES Filed June a, 1925 s Sheets-Shea: 2

auoentoz mwm awuemtoz Aug. 17., 1926.

. J. MAUM DEVICE FOR STRAIGHTENING EXTRUDED SHAPES Filed June 8, 1925 3Sheets-Shet 5 are located Patented Aug. 17, 1926.

UNITED STATES JOHN MAUlVI, F ANSONIA, CONNECTICUT.

DEVICE FOR STRAIGHTENING EXTRUDED SHAPES.

Application filed. June 8, 1925. Serial No. 35,836.

This invention relates to a straightening device for irregular extrudedshapes, and has for an object to provide a device which may be operatedby power for straightening these irregular shapes and thus do away withthe hand straightening operation now generally employed for this type ofarticles.

It is also an object of the invention to provide a power straighteningmeans which may be adjusted to take different sizes of dies required forstraightening different shapes, and thus to reduce the amount of metalrequired for the dies.

"With the foregoing and other objects in new, I have devised theconstruction illustrated in the accompanying drawings forming a part ofthis specification, similar reference characters being employedthroughout the various figures to indicate corresponding elements. In.these drawings,

Fig. 1 is a front elevation of the straightening device, certain partsthereof being broken away to more clearly show the construction, and thebase being shown in section, the plane of the figure being substantially on line 11 of Fig. 3.

Fig. 2 is a top plan view of straightening device. Y

Fig. 3 is a side elevation of the device with portions broken away tomore clearly show the construction.

Fig. tis a transverse section substantial- 1y on line H of Fig. 3, and iFig. 5 is a transverse. section substantially on line55 of Fig. 3.

In forming extruded shapes and moldings the hot metal is forced througha die, the shape of the die, of course, bein'gmade to correspond withthe crosssection. of the bar or molding, and as these extruded bars coolthe metal shrinks and warps, causing it'to get out of the proper shape.At the present time these bars are straightened by hand, which is anexpensive operation. To reduce the expense of straightening these barsand also to increase production I have devised a power straightenerthrough which these irregularshapes may be run with a continuousoperation, and will be straightened as they are pressedthroughthedevice.

One embodiment of the invention is ill-ustrated in the accompanyingdrawings and comprises a bed or base having mounted 4 thereon adjustableblocksll for holding the straightening dies 12 and .13. These dies shavetheether asshown in my improved.

a through suitable Fig. 1, and are shaped on their opposed surfaces tosubstantially correspond with the shape of the upper and lower surfacesof the bar or member 14 to be straightened. In the drawing I have shownthe bar as a plain angle bar, but it is to be understood that this baris shown merely for the purpose of illustration, and practically any ofthe extruded shapes may be straightened in the same manner. As aconvenient mounting for the dies and the blocks 11 the base is way 15 inwhich the blocks 11 are mounted, and the lower die 12 may also be set inthis guideway between the blocks. The opposed faces of the blocks 11 areprovided with vertical guideways, in the present instance grooves 16,for the ends of the dies. The blocks 11 maybe adjusted toward and fromthe dies ing screws 17 threaded into the blocksand mounted in suitablebearing blocks 18 mounted on the base, as shown. It will be apparentthatv by rotating these screws the blocks 11 may be adjusted inwardlyand outwardly toward and the dies 12 and 13. It will thus be apparentthat dies having different lengthsvmay be mounted between the blocks,and therefore, i

for small dies or dies for small sha great deal less metal may be used.would be the case if the blocks 11 were. stationary and placed in aposition to accommodate the largest dies. Thus with my construction nomore metal is used in the die than that required for the die proper and,of course, the guiding ends thereof.

When the device is in operation the lower die. 12 is stationary whilethe upper die 13 is movable up and down. Means are provided for liftingthis die off from the bar 14, suchas the springs 19, which are conpes athan nected to the upper die and also suitable supports 20 at the top ofthe blocks 11. These supports and the blocks 11 extend housings 21mounted on the base, and set screws 22 carried by these housings areemployed to clamp these supports 20 in proper adjusted positions. It isto be noted that the springsare sufficiently strong {0 lift the upperdie 13 away from the bar to be straightened and the upward movement ofthe die is limited b adjustable stop screws 23. .Mounted love the upperdie is a power for continuous. 1y imparting time to an hammering theprovided with a transverse guide-1 by suitable means such as adjustfromeach other and shown at 25.

upper side of this die to force it against the bar 14L to bestraightened and to press this bar between the surfaces of the two diesto thus straighten the bar which is be between the two dies. This 1ngpassed power means inthe device shown comprises hammer 24, shown merelyin outdie by hand some suit-able power means may be provided such as achain operated by a suitable power'means. I I

For best results the bar. let should be guided both before entering thedies and after it leaves them. Fonthis purpose I haveprovided both onthe front and. rear sides of thedies two pairs of upper and lowerguiding rolls 26 and 27 forthe upper and lower sides of the bar andthese rolls are mounted in bearings 28 which are verti cally adjustablein frames 29. A convenient means of adjusting these rolls are screws30and 31 having threaded engagement with the bearings and operated by arod 82 with which they are connected by the beveled gears 33. Byrotating the rod through a crank or other suitable means the rolls maybe adjusted up and down to the proper location. Between the two sets ofrolls is a pair of lateral guides 34. These guides are mounted, inguides 35 on the base 10 and eral sides of the bar by means of thescrews 36 carried by suitable supports 37 secured to the base. It willthus be apparent that.

the bar whilepassing through the dies will be rigidly held and guided inproper relation to the dies by means" of the a guide" rollers 26 and 27and the guides 34, and that these rollers and guides may be easily andquickly adjusted for bars of different sizes and shapes.

i It will. be apparent froni the foregoing description that I havedevised a simple and effective power operated means for straighteningthese extruded shapes and moldings by a continuous operation, and

that, therefore, the greater portion of-the hand operations forstraightening these bars now generally vrequired willbe'ielimi nated.This will, therefore, not only reduce the cost of production butwillalso increase the, amount of production. a Having thus set forth thenature of my invention, what I claim is: r Y 1.,In a device for straihtening bars of (T metal, a pair of'dies'haviiig opposed faces shaped tosubstantially correspond with -the "force it that the bar may ingso'arranged that the bar may. be passed transversely between them fromone side of the dies to the other side during the straighteningoperation, one of said dies being movable toward and from the other dieand said dies being 1n alignment in the direction of movement of themovable die and means for hammering the movable die to 'towardthe otherdie and against the bar to be straightened while extending between thedies.

2. In a device for sraightening bars of metal, a pair of dies havingopposed faces shaped to substantially correspond withthe transversecontours of the opposite sides of the bar to be straightened, said dies'being so arranged that the bar may be passed transversely between themfrom. one side of the dies to the other side during. the straighteningoperation, one of said dies being movable andv said dies beinginalignment in the direction of movement of the movable die,yielding meanstending to move the movable die away from the other die, and means forhammering the movable die to force it against the bar to be straightened while extending between the dies.

. 3.111 a device for straightening bars of metal, a pair of upper and,lower dies havingtheir opposed faces shaped to substantially correspondwith the transverse contours of the opposite sides of the bar to bestraightened, said dies being so arranged be passed transversely betweenthem from one side of the dies to the k other side during thestraightening operamay be ad usted toward and from the lat tion, theupper die being movable vertically, movable guide blocks for the dies atthe opposite ends thereof, means for fshifting said guide blocks toreceive dies of'different metal, a pair of upper andlower dies' hav-iing their opposedfaces shaped torsubstan ftially' correspond with thetransverse con tours of theopposite sides of the bar to bestraightenedgsaid dies being so ,arranged that the v b arfmay bepassedtransversely between them from one side of the dies to the'other sideduring the straightening operation, the upper die being movablevertically, movableguide blocks at the outer ends of the dies-saidblocks having upright guide waysfor the ends of the dies, means foradjusting the blocks toward and from the dies,

and a powermeansfor hammering the upperside ofthe upper die. I v I 5. Ina devicefor straightening bars of metal, a pair of upper and lowerfdiesarranged in superposedrelation and having their opposed faces shaped tosubstantially correspond with the transverse contours of the oppositesides of the bar to be straightened, said dies being soar'ranged thatthe bar may be passed transversely between them from one side of thedies to the other side during the straightening operation, the upper diebeing movable vertically and said dies being in vertical alignment,springs connected to the upper die to hold it spaced above the lowerdie, and power means for hammering the upper side of the upper die.

6. In a device for straightening bars of metal, a pair of upper andlower dies having their opposed faces shaped to substantially correspondwith the transverse contours of the opposite sides of the bar to bestraightened, said dies being'so arranged that the bar may be passedtransversely between them from one side of the dies to the other sideduring the straightening opera tion, the upper die being movablevertically, springs connected to the upper die to hold it spaced abovethe lower die, movable guide blocks at the opposite ends of the dies,means for adjusting the blocks toward and from the dies, said blocksbeing provided with vertical guide ways for the upper die, and powermeans for hammering the top of the upper die.

7. In a device for straightening bars of metal, a base having atransverse guide way, a pair of blocks mounted to slide in said guideway, a pair of upper and lower dies having their opposed faces shaped tosubstantially correspond with the transverse contours of the oppositesides of the bar to be straightened, said dies being so arranged thatthe bar may be passed transversely between them from one side of thedies to the other side during the straightening operation, said blocksbeing provided with upright guide ways on their inner walls for the endsof the dies, the blocks toward and from the dies, yielding means tendingto lift the upper die, and power means for hammering the top of theupper die.

8. I11 a straightening device of the character described, a base, a pairof blocks adjustably mounted on said base, means for adjusting theblocks toward and from each other, upper and lower dies between saidblocks, said blocks being provided with upright guideways for the endsof the dies, springs tending to lift the upper die, adjustable stopmeans for limiting the upward movement of said die, and means forhammering the top of the upper die.

means for adjusting 9. In a straightening device of the chari acterdescribed, a pair of vertically spaced dies located in superposedrelation, the upper die being movable vertically and said dies being invertical alignment, springs tending to lift the upper die, power meansfor hammering the top of the upper die, and adjustable guides for themember to be straightened located to, the front-and rear of said dies.

10. In a straightening device of the character described, a pair ofvertically spaced dies, the upper die being movable vertically, springstending to lift the upper die, power means for hammering the top of theupper die, guide rollers for the top and bottom of the member to bestraightened, means for adjusting the rollers toward and from eachother, guides for the lateral sides of the member to be straightened,and means for adjusting these latter guides toward and from each other.

In testimony whereofI affix my signature.

JOHN MAUM.

